I have a toyota supra and it is a non-turbo with a turbonetics turbo upgrade converting it to a turbo. My problem- i had an accident and since the accident the car has not run right. There were codes thrown and they were missfire codes, too lean code, oxygen sensor 1 malfunction,and oxygen sensor 1 running slow during testing. I replaced the spark plugs, cause all 6 of them were fouled out, and that fixed the missfires. I also replaced the fuel filter, and both oxygen sensor 1 and oxygen sensor 2 and it did nothing for me. I will start the car and it runs fine at idle,but when i slowly start pushing down the accelerater climbing from 1000 rpm to 1500 rpm it does fine but as soon as I hit 2000 rpm it drops down below 2000 rpm and if i sit there and keep the accelerater at the same place it took to reach 2000 rpm it will repeatidaly drop and go back up and drop below 2000 rpm. If I drive the car it does the same thing, but when I drive it will go over 2000 rpm and drive but it acts like its not getting gas and will slow down and then kick back in and go, but i replaced all fuel related parts, also put in lucus fuel injector cleaner and that didnt work either. I need help, and any you can supply will be greatly appriciated. thank you